[Solved] What will be the output of this code?class Person { String name; } public class Test { public static void main(String[] args) { Person p = new Person(); System.out.println(p.name); } } | Java

Java - Constructors

What will be the output of this code?

class Person {
  String name;
}
public class Test {
  public static void main(String[] args) {
    Person p = new Person();
    System.out.println(p.name);
  }
}

Anull

B"" (empty string)

CCompilation error

DRuntime exception

Step-by-Step Solution

Solution:

Step 1: Understand default constructor and field initialization
Java provides a default constructor. The String field 'name' is initialized to null by default.
Step 2: Predict output of printing name
Printing p.name outputs null because object references default to null.
Final Answer:
null -> Option A
Quick Check:
Default String field value = null [OK]

Quick Trick: Object fields default to null if not initialized [OK]

Common Mistakes:

Expecting empty string
Thinking compile error due to missing constructor
Expecting runtime exception

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What will be the output of this code?

Step 1: Understand default constructor and field initialization

Step 2: Predict output of printing name

Final Answer:

Quick Check:

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